[Bug bootstrap/60984] [4.9 Regression] AIX: gcc-4.9.0 bootstrap fails in stage-2

[dje at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60984

--- Comment #20 from David Edelsohn <dje at gcc dot gnu.org> ---
(gdb) print debug_cgraph_node(node)
__builtin_unreachable/1630 (void __builtin_unreachable()) @700099c0
  Type: function
  Visibility: external public visibility_specified artificial
  References:
  Referring:
  Availability: not_available
  First run: 0
  Function flags:
  Called by: _ZN10vec_prefix20calculate_allocationEPS_jb/554 (can throw
external)
  Calls:
$1 = 10